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#include "base/unnamed_event.h"

#include "base/logging.h"
#include "base/port.h"
#include "base/thread.h"
#include "base/util.h"
#include "testing/base/public/gunit.h"

namespace {
class UnnamedEventNotifierThread: public mozc::Thread {
 public:
  UnnamedEventNotifierThread(mozc::UnnamedEvent *event,
                             int timeout)
      : event_(event), timeout_(timeout) {}

 public:
  void Run() {
    mozc::Util::Sleep(timeout_);
    LOG(INFO) << "Notify event";
    event_->Notify();
  }

 private:
  mozc::UnnamedEvent *event_;
  int timeout_;

  DISALLOW_COPY_AND_ASSIGN(UnnamedEventNotifierThread);
};
}  // namespace

TEST(UnnamedEventTest, UnnamedEventTest) {
  {
    mozc::UnnamedEvent event;
    EXPECT_TRUE(event.IsAvailable());
    UnnamedEventNotifierThread t(&event, 400);
    t.Start();
    EXPECT_FALSE(event.Wait(100));
    EXPECT_FALSE(event.Wait(100));
    EXPECT_TRUE(event.Wait(800));
    t.Join();
  }

  {
    mozc::UnnamedEvent event;
    EXPECT_TRUE(event.IsAvailable());
    UnnamedEventNotifierThread t(&event, 100);
    t.Start();
    EXPECT_TRUE(event.Wait(2000));
    t.Join();
  }

  {
    mozc::UnnamedEvent event;
    EXPECT_TRUE(event.IsAvailable());
    UnnamedEventNotifierThread t(&event, 3000);
    t.Start();
    EXPECT_FALSE(event.Wait(100));
    EXPECT_FALSE(event.Wait(1000));
    EXPECT_FALSE(event.Wait(1000));
    t.Join();
  }

  {
    mozc::UnnamedEvent event;
    EXPECT_TRUE(event.IsAvailable());
    UnnamedEventNotifierThread t(&event, 2000);
    t.Start();
    EXPECT_FALSE(event.Wait(500));
    EXPECT_FALSE(event.Wait(500));
    EXPECT_TRUE(event.Wait(5000));
    t.Join();
  }
}

TEST(UnnamedEventTest, NotifyBeforeWait) {
  mozc::UnnamedEvent event;
  ASSERT_TRUE(event.Notify());
  EXPECT_TRUE(event.Wait(100));
}

TEST(UnnamedEventTest, DoubleNotifyBeforeWait) {
  mozc::UnnamedEvent event;
  ASSERT_TRUE(event.Notify());
  ASSERT_TRUE(event.Notify());
  EXPECT_TRUE(event.Wait(100));
  EXPECT_FALSE(event.Wait(100));
}